Clamping appliance.



P. & c. R. nosn. CLAMPING APPLIANCE.

APPLICATION FILED IAN. 5,1916.

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P. EL C. R. DOSCH.

CLAMPING APPLIANCE.

APPLICATION FILED IAN. 5. IsIe. Lglgjl Patented Feb. 6, 1917.

2 SHEETS-SHEET 2.

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@TATFQS P itilipil PETER. BOSCH AND CHARLES R. DSCEI, OF STRATFORD, CGNNECTICUT.

CLAMPING APPLIANCE.

Application led January 5, 1916.

To all whom t may concern:

Be it known that we, Pn'rnn Dosen and @nantes Besen, both citizens of the United States, residing at the town of Stratford, county of Fairfield, State of Connecticut, have invented certain new and useful Improvements in Clamping' Appliances; and we do declare the following to be a full, clear, and eXact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates` to certain new and useful improvements in clamping appliances with particular reference to an appliance of the quick adjustable type.

Primarily, the invention resides in appl)VY- ing and mounting movable nut elements on a clamping appliance employing 'wooden jaws for association with the usual operating screws.

Another object is to provide a metal licoring for supporting the nut elements against working or digging into the wooden jaw, and, further, to provide a complete housing for guiding and keeping the nut elements in proper position.

rfhe foregoing and other objects are attained by the construction clearly illustrated in the accompanying drawings, described in the following specification, and succinctly defined in the appended claims.

Figure 1 is a fragmentary view of a clamping appliance embodying the invention. Fig. 2 is a horizontal section thereof taken on line 2 2 of Fig. 1; Fig. 3 is a vertical section along line of Fig. 1; i is a longitudinal section of a jaw having a modification of the invention incorporated therein; Fig. 5 is a top plan of the aw embodying the modification, and Fig. 6 is a section therethrough on line 6 6 of Fig. 5.

Referring more in detail to the drawings, and using like characters of reference for corresponding parts, the numeral 1 designates the lower or stationary clamping aw having suitablesoclets in which the lower ends of the operating screws 2 are swiveled, as at 3.

i casing or housing si is set in the upper or outer face of the adjustable clamping j aw 5 and is formed with spaced depending sleeves 6 which extend entirely through provided bores in the aw where their protruding ends are clenched as at 7, on the washers S to secure the casing to the aw. The casing Speccation of Letters Patent.

Patented AFeb. o, 1191?..

Serial No. 70,359.

is, in this instance, longitudinally divided into sections which are secured together by rivets 9. rihe screws 2 slidably engage in the sleeves 6 and, after passing through alined bearings 10 at the top of the casing 4L, terminate in handles 2.

Slidably disposed in the easing is a pair of nut bars 11 and 12 each comprising a hooked terminal 13, formed with an inwardly facing curved seat, and a fiat terminal 1i likewise formed with a curved seat but facing' outwardly. rihese bars are revers/ely arranged to have each fiat terminal adapted to abut the hooked terminal of the other bar in such a manner that their curved seats oppose and form circular openings registering with the alined sleeves and bean ings. rihe curved seatsI of the bars are threaded to intermesh with the threads of screws 2 whereby, when the bars are slid to clamp against the latter, the screws may be rotated to advance or retract the aw 5. Each bar is cut away, as at 15, to permit of the abutting or complementa] nut sections 13 and 1e being separated for releasing the screws at which time the aw 5 is freely slidable thereon. rihe opposing sides of the complemental nut bars are provided with recesses 16 and 17 in which engage the cams 1S, the latter extending laterally from a shaft 1Q iournaled in bearing 2U of casing rl`he outer end of shaft 19 has winged projections 21 constituting an operating handle, while the inner end is slotted at 22 and eX- tends into a depending chamber 23. )L coiled spring 2i has one end anchored at the bottom of the chamber and its opposite end engaged in the slot 22 for alw ys returning the o ierating cam shaft to normal position in which the nut bars are operatively related with the screws It will be obvious, therefore, that when the operating cams are turned clockwise, with respect to Fig. the complemental nut bars will release the screws 2 and permit of the operator sliding the jaw against the work. Upon releasing the handle 21, the spring 2li will return the separable nut elements 11 and 12 into operative relation with the screws and the jaw 5 may accordingly be tightened against the work. In this connection, it will be noted that the bottom wall or plate 4L of casing el provides a metal flooring or guard for the slidable complemental nut bars so that the latter, in their movements, will not dig into the wood of the aw. The complete housing prevents any uplifting or wabbling of the bars, the side walls constituting proper guides therefor.

In Figs. et, 5 and 6, a rectangular casing 25 is embedded in thejaw 5 and formed in its bottom wall with spaced apertures arranged in coincidence with the screw openings 6 of the jaw. rThe nut bars 27 and 28 are arranged in like manner as bars ll and l2 and similarly formed with complemental nut sections 29 and 30. The upper or top wall 31 of the casing 25 is removably secured over the latter by screws 32 and serves as a keeper for the bars 27 and 28.

The voperating means for the bars consists of a lever 33 longitudinally slotted, as at 34C, through which a headed pivot pin projects. On each bar is a lug or stud 36 slidably engaging in the opposite ends of slot Si whereby the bars will be shifted on rotating the lever about its pivot. The lever 33 is disposed beneath the plate 3l and is adapted to be locked by thrusting or sliding its end between a pair of keeper pins 37, as shown in Fig. 5. By shifting the lever 33 to the left, the nut bars will release the screws 2 and permit of the jaw being quickly adjusted.

The foregoing detailed description has been given for clearness of understanding only, it being understood that various changes may be made without departing from the spirit of the invention as enibodied in the appended claims. Thus, the quick adjusting device may be applied to the lower jaw with equally as good results.

What is claimed is:

l. A clamp, comprising in combination a pair of wooden clamping jaws, the outer face of the upper jaw being provided with a recess; a two-part sheet-metal casing or housing secured within said recess and having a. metal floor and a metal cover; operating screws extending through said casing and swiveled at their lower ends in the lower jaw; complemental nut bars mounted in the casing, resting on the metal Hoor thereof, held in place by the metal cover, and adapted to normally engage the operating screws; and means for operating the bars to cause a disengagement thereof from the screws.

2. A clamp, comprising in combination a pair of clamping jaws, the outer face of the upper jaw being provided with a recess; a metal casing or housing seated within the recess; tubular sleeves extending from said casing through the jaw, and secured to the lower face of the jaw; operating screws extending through the casing and sleeves, the lower ends of the screws being swiveled in the lower jaw; nut sections mounted in the casing and normally engaging the screws; and a handle for 0perating said sections, said handle extending out from the casing.

3. A clamp, comprising in combination a pair of wooden clamping jaws, the outer face of the upper jaw being provided with a. recess therein, with a pair of openings extending therefrom through the lower face of the jaw; a longitudinaily-divided metal casing seated within said recess, said casing having depending sleeves extending through the openings aforesaid, the sleeves being clenched or flanged at their lower ends to secure the casing in the jaw.; operating screws extending through said casing and the sleeves, said screws being swiveled to the lower jaw; nut members housed in the casing, adapted to engage the screws; and means carried by the casing for operating said nut members.

l. A clamp, comprising in combination a pair of wooden clamping jaws, the outer face of the upper jaw being provided with a recess therein with a pair of openings eX- tending therefrom through the lower face of the aw; a longitudinally-divided metal casing seated within said recess, said casing having depending sleeves extending through the openings aforesaid, the sleeves being clenched or flanged at their lower ends to secure the casing in the jaw, said casing likewise having acentrally-disposed depending chamber, 23; operating screws extending through the casing and the sleeves; nut members housedin the casing, adapted to engage the screws; a spring-actuated operating device mounted in the chamber and engaging the nut members and a handle eX- tending outwardly from the casing for separating said nut members.

In testimony whereof we affix our signatures in presence of two witnesses.

PETER DOSCH. vClhlARLES R. DOSCH.

Witnesses:

F. W. SMITH, J 1'., M. T. LONGDEN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner` of Patents, Washington, D. C. 

